Archaeologists discovered clusters of red ocher drawings scattered on rocks and cliffs across Canaima National Park—and have some theories on who made the mysterious art.

What are the top facts about the ocean? While much is known about the ocean, a large part of it remains unknown. Here are fun facts about it for people of all ages.

What FACTS ABOUT ROCKS do you know? They are abundant on earth, and yet little is known about them. These facts will increase your knowledge of the rocks.